#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Created by master on 2017/3/12

from twisted.internet import reactor, protocol


# a client protocol

class EchoClient(protocol.Protocol):
    """Once connected, send a message, then print the result."""

    def connectionMade(self):  # 连接建立之后调用
        self.transport.write(bytes("hello alex!","utf8"))

    def dataReceived(self, data):  # 收到数据之后调用
        "As soon as any data is received, write it back."
        print("Server said:", data)
        self.transport.loseConnection()

    def connectionLost(self, reason):
        print("connection lost")


class EchoFactory(protocol.ClientFactory):
    protocol = EchoClient

    def clientConnectionFailed(self, connector, reason):
        print("Connection failed - goodbye!")
        reactor.stop()

    def clientConnectionLost(self, connector, reason):
        print("Connection lost - goodbye!")
        reactor.stop()


# this connects the protocol to a server running on port 8000
def main():
    f = EchoFactory()
    reactor.connectTCP("localhost", 9999, f)
    reactor.run()


# this only runs if the module was *not* imported
if __name__ == '__main__':
    main()
